EFFECT OF SOIL DEPTHS AND SOME DYNAMIC AND MECHANICAL PROPERTIES ON OPERATION CREEPING OF RAZAZA DRAINGE

	EFFECT OF SOIL DEPTHS AND SOME DYNAMIC AND MECHANICAL PROPERTIES ON OPERATION CREEPING OF RAZAZA DRAINGE
journal of kerbala university
Article 1, Volume 5, Issue 2, 2009, Pages 254-276 PDF (0 K)
Abstract
Through operations of investigation on soil test along Razaza drainage which is about 25km. the surface and for seven –meter –depth for some mechanical and dynamic properties (i.e. mechanical such as moisture content, bulk density and other dynamic properties such as liquid limit ,plastic limit and plastic index). Were studied to know the reasons which make drainage soil creeping resulting in reducing the drainage depth and this in turn raise will the level of ground water higher all over Karbala cultivated area .Randomized Complete Block Design (R.C.B.D.) was used. Four soil depths were tested {i.e.R1 (.0-2.0m), R2 (2.0-3.5m), R3 (3.0-5.5m), andR4 (5.5-7.0m). Five treatments were adopted (i.e. liquid limit, plastic limit, plastic index, moisture content and bulk density) representing here after by t1, t2, t3, t4, and t5 respectively. Results could be summarized as follows:- A significant effect was found due to soil depth especially for those taken from1st and 3rd depths at 0.01 level when between the rest depth significant at 0.05 .A marked influence for treatment at P 0.01 was found especially between liquid limit and bulk density. On the other hand, there was significant effect at 0.05 between other treatments. Linear regression equation was calculated between dependent and independent variable, by using SPSS program to explain two properties i.e. liquid limit and bulk density only .Using these two properties, better linear equation could be obtained, preventing the liquefaction behavior of creeping by reducing liquid limit values.

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